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<pre><a name="line-1"></a><span class='hs-comment'>{-# LINE 1 "Network/BSD.hsc" #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE CPP, ForeignFunctionInterface #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LINE 2 "Network/BSD.hsc" #-}</span>
<a name="line-4"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-5"></a><span class='hs-comment'>-- |</span>
<a name="line-6"></a><span class='hs-comment'>-- Module : Network.BSD</span>
<a name="line-7"></a><span class='hs-comment'>-- Copyright : (c) The University of Glasgow 2001</span>
<a name="line-8"></a><span class='hs-comment'>-- License : BSD-style (see the file libraries/network/LICENSE)</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>-- Maintainer : libraries@haskell.org</span>
<a name="line-11"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-12"></a><span class='hs-comment'>-- Portability : non-portable</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-- The "Network.BSD" module defines Haskell bindings to network</span>
<a name="line-15"></a><span class='hs-comment'>-- programming functionality provided by BSD Unix derivatives.</span>
<a name="line-16"></a><span class='hs-comment'>--</span>
<a name="line-17"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-18"></a>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-comment'>{-# LINE 18 "Network/BSD.hsc" #-}</span>
<a name="line-21"></a>
<a name="line-22"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>BSD</span>
<a name="line-23"></a> <span class='hs-layout'>(</span>
<a name="line-24"></a> <span class='hs-comment'>-- * Host names</span>
<a name="line-25"></a> <span class='hs-conid'>HostName</span>
<a name="line-26"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getHostName</span>
<a name="line-27"></a>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>HostEntry</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getHostByName</span>
<a name="line-30"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getHostByAddr</span>
<a name="line-31"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hostAddress</span>
<a name="line-32"></a>
<a name="line-33"></a>
<a name="line-34"></a><span class='hs-comment'>{-# LINE 31 "Network/BSD.hsc" #-}</span>
<a name="line-35"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getHostEntries</span>
<a name="line-36"></a>
<a name="line-37"></a> <span class='hs-comment'>-- ** Low level functionality</span>
<a name="line-38"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>setHostEntry</span>
<a name="line-39"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getHostEntry</span>
<a name="line-40"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>endHostEntry</span>
<a name="line-41"></a>
<a name="line-42"></a><span class='hs-comment'>{-# LINE 38 "Network/BSD.hsc" #-}</span>
<a name="line-43"></a>
<a name="line-44"></a> <span class='hs-comment'>-- * Service names</span>
<a name="line-45"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ServiceEntry</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-46"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ServiceName</span>
<a name="line-47"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getServiceByName</span>
<a name="line-48"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getServiceByPort</span>
<a name="line-49"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getServicePortNumber</span>
<a name="line-50"></a>
<a name="line-51"></a>
<a name="line-52"></a><span class='hs-comment'>{-# LINE 47 "Network/BSD.hsc" #-}</span>
<a name="line-53"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getServiceEntries</span>
<a name="line-54"></a>
<a name="line-55"></a> <span class='hs-comment'>-- ** Low level functionality</span>
<a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getServiceEntry</span>
<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>setServiceEntry</span>
<a name="line-58"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>endServiceEntry</span>
<a name="line-59"></a>
<a name="line-60"></a><span class='hs-comment'>{-# LINE 54 "Network/BSD.hsc" #-}</span>
<a name="line-61"></a>
<a name="line-62"></a> <span class='hs-comment'>-- * Protocol names</span>
<a name="line-63"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ProtocolName</span>
<a name="line-64"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ProtocolNumber</span>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ProtocolEntry</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-66"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getProtocolByName</span>
<a name="line-67"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getProtocolByNumber</span>
<a name="line-68"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getProtocolNumber</span>
<a name="line-69"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>defaultProtocol</span>
<a name="line-70"></a>
<a name="line-71"></a>
<a name="line-72"></a><span class='hs-comment'>{-# LINE 65 "Network/BSD.hsc" #-}</span>
<a name="line-73"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getProtocolEntries</span>
<a name="line-74"></a> <span class='hs-comment'>-- ** Low level functionality</span>
<a name="line-75"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>setProtocolEntry</span>
<a name="line-76"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getProtocolEntry</span>
<a name="line-77"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>endProtocolEntry</span>
<a name="line-78"></a>
<a name="line-79"></a><span class='hs-comment'>{-# LINE 71 "Network/BSD.hsc" #-}</span>
<a name="line-80"></a>
<a name="line-81"></a> <span class='hs-comment'>-- * Port numbers</span>
<a name="line-82"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>PortNumber</span>
<a name="line-83"></a>
<a name="line-84"></a> <span class='hs-comment'>-- * Network names</span>
<a name="line-85"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>NetworkName</span>
<a name="line-86"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>NetworkAddr</span>
<a name="line-87"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>NetworkEntry</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-88"></a>
<a name="line-89"></a>
<a name="line-90"></a><span class='hs-comment'>{-# LINE 81 "Network/BSD.hsc" #-}</span>
<a name="line-91"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getNetworkByName</span>
<a name="line-92"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getNetworkByAddr</span>
<a name="line-93"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getNetworkEntries</span>
<a name="line-94"></a> <span class='hs-comment'>-- ** Low level functionality</span>
<a name="line-95"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>setNetworkEntry</span>
<a name="line-96"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getNetworkEntry</span>
<a name="line-97"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>endNetworkEntry</span>
<a name="line-98"></a>
<a name="line-99"></a><span class='hs-comment'>{-# LINE 89 "Network/BSD.hsc" #-}</span>
<a name="line-100"></a>
<a name="line-101"></a>
<a name="line-102"></a><span class='hs-comment'>{-# LINE 91 "Network/BSD.hsc" #-}</span>
<a name="line-103"></a> <span class='hs-comment'>-- * Interface names</span>
<a name="line-104"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ifNameToIndex</span>
<a name="line-105"></a>
<a name="line-106"></a><span class='hs-comment'>{-# LINE 94 "Network/BSD.hsc" #-}</span>
<a name="line-107"></a>
<a name="line-108"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-109"></a>
<a name="line-110"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span>
<a name="line-111"></a>
<a name="line-112"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Concurrent</span> <span class='hs-layout'>(</span><span class='hs-conid'>MVar</span><span class='hs-layout'>,</span> <span class='hs-varid'>newMVar</span><span class='hs-layout'>,</span> <span class='hs-varid'>withMVar</span><span class='hs-layout'>)</span>
<a name="line-113"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>E</span>
<a name="line-114"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-conid'>CString</span><span class='hs-layout'>,</span> <span class='hs-varid'>peekCString</span><span class='hs-layout'>,</span> <span class='hs-varid'>withCString</span><span class='hs-layout'>)</span>
<a name="line-115"></a>
<a name="line-116"></a><span class='hs-comment'>{-# LINE 105 "Network/BSD.hsc" #-}</span>
<a name="line-117"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>CUInt</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>CULong</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>CSize</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-118"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span><span class='hs-layout'>,</span> <span class='hs-varid'>nullPtr</span><span class='hs-layout'>)</span>
<a name="line-119"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Storable</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-120"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span> <span class='hs-layout'>(</span><span class='hs-varid'>allocaArray0</span><span class='hs-layout'>,</span> <span class='hs-varid'>peekArray0</span><span class='hs-layout'>)</span>
<a name="line-121"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span> <span class='hs-layout'>(</span><span class='hs-varid'>with</span><span class='hs-layout'>,</span> <span class='hs-varid'>fromBool</span><span class='hs-layout'>)</span>
<a name="line-122"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Typeable</span>
<a name="line-123"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span> <span class='hs-layout'>(</span><span class='hs-varid'>ioeSetErrorString</span><span class='hs-layout'>,</span> <span class='hs-varid'>mkIOError</span><span class='hs-layout'>)</span>
<a name="line-124"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafePerformIO</span><span class='hs-layout'>)</span>
<a name="line-125"></a>
<a name="line-126"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span>
<a name="line-127"></a>
<a name="line-128"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-varid'>liftM</span><span class='hs-layout'>)</span>
<a name="line-129"></a>
<a name="line-130"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span> <span class='hs-layout'>(</span><span class='hs-varid'>throwSocketErrorIfMinus1_</span><span class='hs-layout'>)</span>
<a name="line-131"></a>
<a name="line-132"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-133"></a><span class='hs-comment'>-- Basic Types</span>
<a name="line-134"></a>
<a name="line-135"></a><a name="ProtocolName"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ProtocolName</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-136"></a>
<a name="line-137"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-138"></a><span class='hs-comment'>-- Service Database Access</span>
<a name="line-139"></a>
<a name="line-140"></a><span class='hs-comment'>-- Calling getServiceByName for a given service and protocol returns</span>
<a name="line-141"></a><span class='hs-comment'>-- the systems service entry. This should be used to find the port</span>
<a name="line-142"></a><span class='hs-comment'>-- numbers for standard protocols such as SMTP and FTP. The remaining</span>
<a name="line-143"></a><span class='hs-comment'>-- three functions should be used for browsing the service database</span>
<a name="line-144"></a><span class='hs-comment'>-- sequentially.</span>
<a name="line-145"></a>
<a name="line-146"></a><span class='hs-comment'>-- Calling setServiceEntry with True indicates that the service</span>
<a name="line-147"></a><span class='hs-comment'>-- database should be left open between calls to getServiceEntry. To</span>
<a name="line-148"></a><span class='hs-comment'>-- close the database a call to endServiceEntry is required. This</span>
<a name="line-149"></a><span class='hs-comment'>-- database file is usually stored in the file /etc/services.</span>
<a name="line-150"></a>
<a name="line-151"></a><a name="ServiceEntry"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ServiceEntry</span> <span class='hs-keyglyph'>=</span>
<a name="line-152"></a> <span class='hs-conid'>ServiceEntry</span> <span class='hs-layout'>{</span>
<a name="line-153"></a> <span class='hs-varid'>serviceName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ServiceName</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Official Name</span>
<a name="line-154"></a> <span class='hs-varid'>serviceAliases</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ServiceName</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- aliases</span>
<a name="line-155"></a> <span class='hs-varid'>servicePort</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PortNumber</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Port Number ( network byte order )</span>
<a name="line-156"></a> <span class='hs-varid'>serviceProtocol</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ProtocolName</span> <span class='hs-comment'>-- Protocol</span>
<a name="line-157"></a> <span class='hs-layout'>}</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-158"></a>
<a name="line-159"></a><a name="instance%20Storable%20ServiceEntry"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-conid'>ServiceEntry</span> <span class='hs-keyword'>where</span>
<a name="line-160"></a> <span class='hs-varid'>sizeOf</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>32</span>
<a name="line-161"></a><span class='hs-comment'>{-# LINE 149 "Network/BSD.hsc" #-}</span>
<a name="line-162"></a> <span class='hs-varid'>alignment</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>alignment</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ???</span>
<a name="line-163"></a>
<a name="line-164"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-165"></a> <span class='hs-varid'>s_name</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekCString</span>
<a name="line-166"></a><span class='hs-comment'>{-# LINE 153 "Network/BSD.hsc" #-}</span>
<a name="line-167"></a> <span class='hs-varid'>s_aliases</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-168"></a><span class='hs-comment'>{-# LINE 154 "Network/BSD.hsc" #-}</span>
<a name="line-169"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekArray0</span> <span class='hs-varid'>nullPtr</span>
<a name="line-170"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>peekCString</span>
<a name="line-171"></a> <span class='hs-varid'>s_port</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-172"></a><span class='hs-comment'>{-# LINE 157 "Network/BSD.hsc" #-}</span>
<a name="line-173"></a> <span class='hs-varid'>s_proto</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>24</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekCString</span>
<a name="line-174"></a><span class='hs-comment'>{-# LINE 158 "Network/BSD.hsc" #-}</span>
<a name="line-175"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>ServiceEntry</span> <span class='hs-layout'>{</span>
<a name="line-176"></a> <span class='hs-varid'>serviceName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_name</span><span class='hs-layout'>,</span>
<a name="line-177"></a> <span class='hs-varid'>serviceAliases</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_aliases</span><span class='hs-layout'>,</span>
<a name="line-178"></a>
<a name="line-179"></a><span class='hs-comment'>{-# LINE 164 "Network/BSD.hsc" #-}</span>
<a name="line-180"></a> <span class='hs-comment'>-- s_port is already in network byte order, but it</span>
<a name="line-181"></a> <span class='hs-comment'>-- might be the wrong size.</span>
<a name="line-182"></a> <span class='hs-varid'>servicePort</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>s_port</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-183"></a>
<a name="line-184"></a><span class='hs-comment'>{-# LINE 168 "Network/BSD.hsc" #-}</span>
<a name="line-185"></a> <span class='hs-varid'>serviceProtocol</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s_proto</span>
<a name="line-186"></a> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-187"></a>
<a name="line-188"></a> <span class='hs-varid'>poke</span> <span class='hs-sel'>_p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"Storable.poke(BSD.ServiceEntry) not implemented"</span>
<a name="line-189"></a>
<a name="line-190"></a>
<a name="line-191"></a><a name="getServiceByName"></a><span class='hs-comment'>-- | Get service by name.</span>
<a name="line-192"></a><span class='hs-definition'>getServiceByName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ServiceName</span> <span class='hs-comment'>-- Service Name</span>
<a name="line-193"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ProtocolName</span> <span class='hs-comment'>-- Protocol Name</span>
<a name="line-194"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ServiceEntry</span> <span class='hs-comment'>-- Service Entry</span>
<a name="line-195"></a><span class='hs-definition'>getServiceByName</span> <span class='hs-varid'>name</span> <span class='hs-varid'>proto</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-196"></a> <span class='hs-varid'>withCString</span> <span class='hs-varid'>name</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>cstr_name</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-197"></a> <span class='hs-varid'>withCString</span> <span class='hs-varid'>proto</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>cstr_proto</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-198"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getServiceByName"</span> <span class='hs-str'>"no such service entry"</span>
<a name="line-199"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getservbyname</span> <span class='hs-varid'>cstr_name</span> <span class='hs-varid'>cstr_proto</span>
<a name="line-200"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-201"></a>
<a name="line-202"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getservbyname"</span>
<a name="line-203"></a> <span class='hs-varid'>c_getservbyname</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>ServiceEntry</span><span class='hs-layout'>)</span>
<a name="line-204"></a>
<a name="line-205"></a><a name="getServiceByPort"></a><span class='hs-comment'>-- | Get the service given a 'PortNumber' and 'ProtocolName'.</span>
<a name="line-206"></a><span class='hs-definition'>getServiceByPort</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PortNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ProtocolName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ServiceEntry</span>
<a name="line-207"></a><span class='hs-definition'>getServiceByPort</span> <span class='hs-varid'>port</span> <span class='hs-varid'>proto</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-208"></a> <span class='hs-varid'>withCString</span> <span class='hs-varid'>proto</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>cstr_proto</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-209"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getServiceByPort"</span> <span class='hs-str'>"no such service entry"</span>
<a name="line-210"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getservbyport</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>port</span><span class='hs-layout'>)</span> <span class='hs-varid'>cstr_proto</span>
<a name="line-211"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-212"></a>
<a name="line-213"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getservbyport"</span>
<a name="line-214"></a> <span class='hs-varid'>c_getservbyport</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>ServiceEntry</span><span class='hs-layout'>)</span>
<a name="line-215"></a>
<a name="line-216"></a><a name="getServicePortNumber"></a><span class='hs-comment'>-- | Get the 'PortNumber' corresponding to the 'ServiceName'.</span>
<a name="line-217"></a><span class='hs-definition'>getServicePortNumber</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ServiceName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>PortNumber</span>
<a name="line-218"></a><span class='hs-definition'>getServicePortNumber</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-219"></a> <span class='hs-layout'>(</span><span class='hs-conid'>ServiceEntry</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>port</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getServiceByName</span> <span class='hs-varid'>name</span> <span class='hs-str'>"tcp"</span>
<a name="line-220"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>port</span>
<a name="line-221"></a>
<a name="line-222"></a>
<a name="line-223"></a><a name="getServiceEntry"></a><span class='hs-comment'>{-# LINE 206 "Network/BSD.hsc" #-}</span>
<a name="line-224"></a><span class='hs-definition'>getServiceEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ServiceEntry</span>
<a name="line-225"></a><span class='hs-definition'>getServiceEntry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-226"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getServiceEntry"</span> <span class='hs-str'>"no such service entry"</span>
<a name="line-227"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getservent</span>
<a name="line-228"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-229"></a>
<a name="line-230"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getservent"</span> <span class='hs-varid'>c_getservent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>ServiceEntry</span><span class='hs-layout'>)</span>
<a name="line-231"></a>
<a name="line-232"></a><a name="setServiceEntry"></a><span class='hs-definition'>setServiceEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-233"></a><span class='hs-definition'>setServiceEntry</span> <span class='hs-varid'>flg</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_setservent</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromBool</span> <span class='hs-varid'>flg</span><span class='hs-layout'>)</span>
<a name="line-234"></a>
<a name="line-235"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"setservent"</span> <span class='hs-varid'>c_setservent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-236"></a>
<a name="line-237"></a><a name="endServiceEntry"></a><span class='hs-definition'>endServiceEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-238"></a><span class='hs-definition'>endServiceEntry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_endservent</span>
<a name="line-239"></a>
<a name="line-240"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"endservent"</span> <span class='hs-varid'>c_endservent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-241"></a>
<a name="line-242"></a><a name="getServiceEntries"></a><span class='hs-definition'>getServiceEntries</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ServiceEntry</span><span class='hs-keyglyph'>]</span>
<a name="line-243"></a><span class='hs-definition'>getServiceEntries</span> <span class='hs-varid'>stayOpen</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-244"></a> <span class='hs-varid'>setServiceEntry</span> <span class='hs-varid'>stayOpen</span>
<a name="line-245"></a> <span class='hs-varid'>getEntries</span> <span class='hs-layout'>(</span><span class='hs-varid'>getServiceEntry</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>endServiceEntry</span><span class='hs-layout'>)</span>
<a name="line-246"></a>
<a name="line-247"></a><span class='hs-comment'>{-# LINE 229 "Network/BSD.hsc" #-}</span>
<a name="line-248"></a>
<a name="line-249"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-250"></a><span class='hs-comment'>-- Protocol Entries</span>
<a name="line-251"></a>
<a name="line-252"></a><span class='hs-comment'>-- The following relate directly to the corresponding UNIX C</span>
<a name="line-253"></a><span class='hs-comment'>-- calls for returning the protocol entries. The protocol entry is</span>
<a name="line-254"></a><span class='hs-comment'>-- represented by the Haskell type ProtocolEntry.</span>
<a name="line-255"></a>
<a name="line-256"></a><span class='hs-comment'>-- As for setServiceEntry above, calling setProtocolEntry.</span>
<a name="line-257"></a><span class='hs-comment'>-- determines whether or not the protocol database file, usually</span>
<a name="line-258"></a><span class='hs-comment'>-- @/etc/protocols@, is to be kept open between calls of</span>
<a name="line-259"></a><span class='hs-comment'>-- getProtocolEntry. Similarly,</span>
<a name="line-260"></a>
<a name="line-261"></a><a name="ProtocolEntry"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ProtocolEntry</span> <span class='hs-keyglyph'>=</span>
<a name="line-262"></a> <span class='hs-conid'>ProtocolEntry</span> <span class='hs-layout'>{</span>
<a name="line-263"></a> <span class='hs-varid'>protoName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ProtocolName</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Official Name</span>
<a name="line-264"></a> <span class='hs-varid'>protoAliases</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ProtocolName</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- aliases</span>
<a name="line-265"></a> <span class='hs-varid'>protoNumber</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ProtocolNumber</span> <span class='hs-comment'>-- Protocol Number</span>
<a name="line-266"></a> <span class='hs-layout'>}</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-267"></a>
<a name="line-268"></a><a name="instance%20Storable%20ProtocolEntry"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-conid'>ProtocolEntry</span> <span class='hs-keyword'>where</span>
<a name="line-269"></a> <span class='hs-varid'>sizeOf</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>24</span>
<a name="line-270"></a><span class='hs-comment'>{-# LINE 251 "Network/BSD.hsc" #-}</span>
<a name="line-271"></a> <span class='hs-varid'>alignment</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>alignment</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ???</span>
<a name="line-272"></a>
<a name="line-273"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-274"></a> <span class='hs-varid'>p_name</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekCString</span>
<a name="line-275"></a><span class='hs-comment'>{-# LINE 255 "Network/BSD.hsc" #-}</span>
<a name="line-276"></a> <span class='hs-varid'>p_aliases</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-277"></a><span class='hs-comment'>{-# LINE 256 "Network/BSD.hsc" #-}</span>
<a name="line-278"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekArray0</span> <span class='hs-varid'>nullPtr</span>
<a name="line-279"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>peekCString</span>
<a name="line-280"></a>
<a name="line-281"></a><span class='hs-comment'>{-# LINE 265 "Network/BSD.hsc" #-}</span>
<a name="line-282"></a> <span class='hs-varid'>p_proto</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-283"></a><span class='hs-comment'>{-# LINE 266 "Network/BSD.hsc" #-}</span>
<a name="line-284"></a>
<a name="line-285"></a><span class='hs-comment'>{-# LINE 267 "Network/BSD.hsc" #-}</span>
<a name="line-286"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>ProtocolEntry</span> <span class='hs-layout'>{</span>
<a name="line-287"></a> <span class='hs-varid'>protoName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p_name</span><span class='hs-layout'>,</span>
<a name="line-288"></a> <span class='hs-varid'>protoAliases</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p_aliases</span><span class='hs-layout'>,</span>
<a name="line-289"></a> <span class='hs-varid'>protoNumber</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p_proto</span>
<a name="line-290"></a> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-291"></a>
<a name="line-292"></a> <span class='hs-varid'>poke</span> <span class='hs-sel'>_p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"Storable.poke(BSD.ProtocolEntry) not implemented"</span>
<a name="line-293"></a>
<a name="line-294"></a><a name="getProtocolByName"></a><span class='hs-definition'>getProtocolByName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ProtocolName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ProtocolEntry</span>
<a name="line-295"></a><span class='hs-definition'>getProtocolByName</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-296"></a> <span class='hs-varid'>withCString</span> <span class='hs-varid'>name</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>name_cstr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-297"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getProtocolByName"</span> <span class='hs-layout'>(</span><span class='hs-str'>"no such protocol name: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span>
<a name="line-298"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getprotobyname</span> <span class='hs-varid'>name_cstr</span>
<a name="line-299"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-300"></a>
<a name="line-301"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getprotobyname"</span>
<a name="line-302"></a> <span class='hs-varid'>c_getprotobyname</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>ProtocolEntry</span><span class='hs-layout'>)</span>
<a name="line-303"></a>
<a name="line-304"></a>
<a name="line-305"></a><a name="getProtocolByNumber"></a><span class='hs-definition'>getProtocolByNumber</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ProtocolNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ProtocolEntry</span>
<a name="line-306"></a><span class='hs-definition'>getProtocolByNumber</span> <span class='hs-varid'>num</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-307"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getProtocolByNumber"</span> <span class='hs-layout'>(</span><span class='hs-str'>"no such protocol number: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>num</span><span class='hs-layout'>)</span>
<a name="line-308"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getprotobynumber</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>num</span><span class='hs-layout'>)</span>
<a name="line-309"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-310"></a>
<a name="line-311"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getprotobynumber"</span>
<a name="line-312"></a> <span class='hs-varid'>c_getprotobynumber</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>ProtocolEntry</span><span class='hs-layout'>)</span>
<a name="line-313"></a>
<a name="line-314"></a>
<a name="line-315"></a><a name="getProtocolNumber"></a><span class='hs-definition'>getProtocolNumber</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ProtocolName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ProtocolNumber</span>
<a name="line-316"></a><span class='hs-definition'>getProtocolNumber</span> <span class='hs-varid'>proto</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-317"></a> <span class='hs-layout'>(</span><span class='hs-conid'>ProtocolEntry</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>num</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getProtocolByName</span> <span class='hs-varid'>proto</span>
<a name="line-318"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>num</span>
<a name="line-319"></a>
<a name="line-320"></a>
<a name="line-321"></a><a name="getProtocolEntry"></a><span class='hs-comment'>{-# LINE 302 "Network/BSD.hsc" #-}</span>
<a name="line-322"></a><span class='hs-definition'>getProtocolEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ProtocolEntry</span> <span class='hs-comment'>-- Next Protocol Entry from DB</span>
<a name="line-323"></a><span class='hs-definition'>getProtocolEntry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-324"></a> <span class='hs-varid'>ent</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getProtocolEntry"</span> <span class='hs-str'>"no such protocol entry"</span>
<a name="line-325"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getprotoent</span>
<a name="line-326"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>ent</span>
<a name="line-327"></a>
<a name="line-328"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getprotoent"</span> <span class='hs-varid'>c_getprotoent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>ProtocolEntry</span><span class='hs-layout'>)</span>
<a name="line-329"></a>
<a name="line-330"></a><a name="setProtocolEntry"></a><span class='hs-definition'>setProtocolEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <span class='hs-comment'>-- Keep DB Open ?</span>
<a name="line-331"></a><span class='hs-definition'>setProtocolEntry</span> <span class='hs-varid'>flg</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_setprotoent</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromBool</span> <span class='hs-varid'>flg</span><span class='hs-layout'>)</span>
<a name="line-332"></a>
<a name="line-333"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"setprotoent"</span> <span class='hs-varid'>c_setprotoent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-334"></a>
<a name="line-335"></a><a name="endProtocolEntry"></a><span class='hs-definition'>endProtocolEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-336"></a><span class='hs-definition'>endProtocolEntry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_endprotoent</span>
<a name="line-337"></a>
<a name="line-338"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"endprotoent"</span> <span class='hs-varid'>c_endprotoent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-339"></a>
<a name="line-340"></a><a name="getProtocolEntries"></a><span class='hs-definition'>getProtocolEntries</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ProtocolEntry</span><span class='hs-keyglyph'>]</span>
<a name="line-341"></a><span class='hs-definition'>getProtocolEntries</span> <span class='hs-varid'>stayOpen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-342"></a> <span class='hs-varid'>setProtocolEntry</span> <span class='hs-varid'>stayOpen</span>
<a name="line-343"></a> <span class='hs-varid'>getEntries</span> <span class='hs-layout'>(</span><span class='hs-varid'>getProtocolEntry</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>endProtocolEntry</span><span class='hs-layout'>)</span>
<a name="line-344"></a>
<a name="line-345"></a><span class='hs-comment'>{-# LINE 325 "Network/BSD.hsc" #-}</span>
<a name="line-346"></a>
<a name="line-347"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-348"></a><span class='hs-comment'>-- Host lookups</span>
<a name="line-349"></a>
<a name="line-350"></a><a name="HostEntry"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>HostEntry</span> <span class='hs-keyglyph'>=</span>
<a name="line-351"></a> <span class='hs-conid'>HostEntry</span> <span class='hs-layout'>{</span>
<a name="line-352"></a> <span class='hs-varid'>hostName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HostName</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Official Name</span>
<a name="line-353"></a> <span class='hs-varid'>hostAliases</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>HostName</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- aliases</span>
<a name="line-354"></a> <span class='hs-varid'>hostFamily</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Family</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Host Type (currently AF_INET)</span>
<a name="line-355"></a> <span class='hs-varid'>hostAddresses</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>HostAddress</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- Set of Network Addresses (in network byte order)</span>
<a name="line-356"></a> <span class='hs-layout'>}</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-357"></a>
<a name="line-358"></a><a name="instance%20Storable%20HostEntry"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-conid'>HostEntry</span> <span class='hs-keyword'>where</span>
<a name="line-359"></a> <span class='hs-varid'>sizeOf</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>32</span>
<a name="line-360"></a><span class='hs-comment'>{-# LINE 339 "Network/BSD.hsc" #-}</span>
<a name="line-361"></a> <span class='hs-varid'>alignment</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>alignment</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ???</span>
<a name="line-362"></a>
<a name="line-363"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-364"></a> <span class='hs-varid'>h_name</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekCString</span>
<a name="line-365"></a><span class='hs-comment'>{-# LINE 343 "Network/BSD.hsc" #-}</span>
<a name="line-366"></a> <span class='hs-varid'>h_aliases</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-367"></a><span class='hs-comment'>{-# LINE 344 "Network/BSD.hsc" #-}</span>
<a name="line-368"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekArray0</span> <span class='hs-varid'>nullPtr</span>
<a name="line-369"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>peekCString</span>
<a name="line-370"></a> <span class='hs-varid'>h_addrtype</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-371"></a><span class='hs-comment'>{-# LINE 347 "Network/BSD.hsc" #-}</span>
<a name="line-372"></a> <span class='hs-comment'>-- h_length <- (#peek struct hostent, h_length) p</span>
<a name="line-373"></a> <span class='hs-varid'>h_addr_list</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>24</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-374"></a><span class='hs-comment'>{-# LINE 349 "Network/BSD.hsc" #-}</span>
<a name="line-375"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekArray0</span> <span class='hs-varid'>nullPtr</span>
<a name="line-376"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>peek</span>
<a name="line-377"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>HostEntry</span> <span class='hs-layout'>{</span>
<a name="line-378"></a> <span class='hs-varid'>hostName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>h_name</span><span class='hs-layout'>,</span>
<a name="line-379"></a> <span class='hs-varid'>hostAliases</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>h_aliases</span><span class='hs-layout'>,</span>
<a name="line-380"></a>
<a name="line-381"></a><span class='hs-comment'>{-# LINE 357 "Network/BSD.hsc" #-}</span>
<a name="line-382"></a> <span class='hs-varid'>hostFamily</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpackFamily</span> <span class='hs-varid'>h_addrtype</span><span class='hs-layout'>,</span>
<a name="line-383"></a>
<a name="line-384"></a><span class='hs-comment'>{-# LINE 359 "Network/BSD.hsc" #-}</span>
<a name="line-385"></a> <span class='hs-varid'>hostAddresses</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>h_addr_list</span>
<a name="line-386"></a> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-387"></a>
<a name="line-388"></a> <span class='hs-varid'>poke</span> <span class='hs-sel'>_p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"Storable.poke(BSD.ServiceEntry) not implemented"</span>
<a name="line-389"></a>
<a name="line-390"></a>
<a name="line-391"></a><a name="hostAddress"></a><span class='hs-comment'>-- convenience function:</span>
<a name="line-392"></a><span class='hs-definition'>hostAddress</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HostEntry</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HostAddress</span>
<a name="line-393"></a><span class='hs-definition'>hostAddress</span> <span class='hs-layout'>(</span><span class='hs-conid'>HostEntry</span> <span class='hs-varid'>nm</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ls</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-394"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ls</span> <span class='hs-keyword'>of</span>
<a name="line-395"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>error</span> <span class='hs-layout'>(</span><span class='hs-str'>"BSD.hostAddress: empty network address list for "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nm</span><span class='hs-layout'>)</span>
<a name="line-396"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>x</span>
<a name="line-397"></a>
<a name="line-398"></a><span class='hs-comment'>-- getHostByName must use the same lock as the *hostent functions</span>
<a name="line-399"></a><span class='hs-comment'>-- may cause problems if called concurrently.</span>
<a name="line-400"></a>
<a name="line-401"></a><a name="getHostByName"></a><span class='hs-comment'>-- | Resolve a 'HostName' to IPv4 address.</span>
<a name="line-402"></a><span class='hs-definition'>getHostByName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HostName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>HostEntry</span>
<a name="line-403"></a><span class='hs-definition'>getHostByName</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-404"></a> <span class='hs-varid'>withCString</span> <span class='hs-varid'>name</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>name_cstr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-405"></a> <span class='hs-varid'>ent</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getHostByName"</span> <span class='hs-str'>"no such host entry"</span>
<a name="line-406"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_gethostbyname</span> <span class='hs-varid'>name_cstr</span>
<a name="line-407"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>ent</span>
<a name="line-408"></a>
<a name="line-409"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>safe</span> <span class='hs-str'>"gethostbyname"</span>
<a name="line-410"></a> <span class='hs-varid'>c_gethostbyname</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>HostEntry</span><span class='hs-layout'>)</span>
<a name="line-411"></a>
<a name="line-412"></a>
<a name="line-413"></a><a name="getHostByAddr"></a><span class='hs-comment'>-- The locking of gethostbyaddr is similar to gethostbyname.</span>
<a name="line-414"></a><span class='hs-comment'>-- | Get a 'HostEntry' corresponding to the given address and family.</span>
<a name="line-415"></a><span class='hs-comment'>-- Note that only IPv4 is currently supported.</span>
<a name="line-416"></a><span class='hs-definition'>getHostByAddr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Family</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HostAddress</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>HostEntry</span>
<a name="line-417"></a><span class='hs-definition'>getHostByAddr</span> <span class='hs-keyword'>family</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-418"></a> <span class='hs-varid'>with</span> <span class='hs-varid'>addr</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>ptr_addr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-419"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getHostByAddr"</span> <span class='hs-str'>"no such host entry"</span>
<a name="line-420"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_gethostbyaddr</span> <span class='hs-varid'>ptr_addr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>sizeOf</span> <span class='hs-varid'>addr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>packFamily</span> <span class='hs-keyword'>family</span><span class='hs-layout'>)</span>
<a name="line-421"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-422"></a>
<a name="line-423"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>safe</span> <span class='hs-str'>"gethostbyaddr"</span>
<a name="line-424"></a> <span class='hs-varid'>c_gethostbyaddr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>HostAddress</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>HostEntry</span><span class='hs-layout'>)</span>
<a name="line-425"></a>
<a name="line-426"></a>
<a name="line-427"></a><a name="getHostEntry"></a><span class='hs-comment'>{-# LINE 401 "Network/BSD.hsc" #-}</span>
<a name="line-428"></a><span class='hs-definition'>getHostEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>HostEntry</span>
<a name="line-429"></a><span class='hs-definition'>getHostEntry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-430"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getHostEntry"</span> <span class='hs-str'>"unable to retrieve host entry"</span>
<a name="line-431"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_gethostent</span>
<a name="line-432"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-433"></a>
<a name="line-434"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gethostent"</span> <span class='hs-varid'>c_gethostent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>HostEntry</span><span class='hs-layout'>)</span>
<a name="line-435"></a>
<a name="line-436"></a><a name="setHostEntry"></a><span class='hs-definition'>setHostEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-437"></a><span class='hs-definition'>setHostEntry</span> <span class='hs-varid'>flg</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_sethostent</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromBool</span> <span class='hs-varid'>flg</span><span class='hs-layout'>)</span>
<a name="line-438"></a>
<a name="line-439"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"sethostent"</span> <span class='hs-varid'>c_sethostent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-440"></a>
<a name="line-441"></a><a name="endHostEntry"></a><span class='hs-definition'>endHostEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-442"></a><span class='hs-definition'>endHostEntry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_endhostent</span>
<a name="line-443"></a>
<a name="line-444"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"endhostent"</span> <span class='hs-varid'>c_endhostent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-445"></a>
<a name="line-446"></a><a name="getHostEntries"></a><span class='hs-definition'>getHostEntries</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>HostEntry</span><span class='hs-keyglyph'>]</span>
<a name="line-447"></a><span class='hs-definition'>getHostEntries</span> <span class='hs-varid'>stayOpen</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-448"></a> <span class='hs-varid'>setHostEntry</span> <span class='hs-varid'>stayOpen</span>
<a name="line-449"></a> <span class='hs-varid'>getEntries</span> <span class='hs-layout'>(</span><span class='hs-varid'>getHostEntry</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>endHostEntry</span><span class='hs-layout'>)</span>
<a name="line-450"></a>
<a name="line-451"></a><span class='hs-comment'>{-# LINE 424 "Network/BSD.hsc" #-}</span>
<a name="line-452"></a>
<a name="line-453"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-454"></a><span class='hs-comment'>-- Accessing network information</span>
<a name="line-455"></a>
<a name="line-456"></a><span class='hs-comment'>-- Same set of access functions as for accessing host,protocol and</span>
<a name="line-457"></a><span class='hs-comment'>-- service system info, this time for the types of networks supported.</span>
<a name="line-458"></a>
<a name="line-459"></a><a name="NetworkAddr"></a><span class='hs-comment'>-- network addresses are represented in host byte order.</span>
<a name="line-460"></a><a name="NetworkAddr"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>NetworkAddr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CULong</span>
<a name="line-461"></a>
<a name="line-462"></a><a name="NetworkName"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>NetworkName</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-463"></a>
<a name="line-464"></a><a name="NetworkEntry"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>NetworkEntry</span> <span class='hs-keyglyph'>=</span>
<a name="line-465"></a> <span class='hs-conid'>NetworkEntry</span> <span class='hs-layout'>{</span>
<a name="line-466"></a> <span class='hs-varid'>networkName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NetworkName</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- official name</span>
<a name="line-467"></a> <span class='hs-varid'>networkAliases</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>NetworkName</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- aliases</span>
<a name="line-468"></a> <span class='hs-varid'>networkFamily</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Family</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- type</span>
<a name="line-469"></a> <span class='hs-varid'>networkAddress</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NetworkAddr</span>
<a name="line-470"></a> <span class='hs-layout'>}</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-471"></a>
<a name="line-472"></a><a name="instance%20Storable%20NetworkEntry"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-conid'>NetworkEntry</span> <span class='hs-keyword'>where</span>
<a name="line-473"></a> <span class='hs-varid'>sizeOf</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>32</span>
<a name="line-474"></a><span class='hs-comment'>{-# LINE 446 "Network/BSD.hsc" #-}</span>
<a name="line-475"></a> <span class='hs-varid'>alignment</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>alignment</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ???</span>
<a name="line-476"></a>
<a name="line-477"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-478"></a> <span class='hs-varid'>n_name</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekCString</span>
<a name="line-479"></a><span class='hs-comment'>{-# LINE 450 "Network/BSD.hsc" #-}</span>
<a name="line-480"></a> <span class='hs-varid'>n_aliases</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-481"></a><span class='hs-comment'>{-# LINE 451 "Network/BSD.hsc" #-}</span>
<a name="line-482"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekArray0</span> <span class='hs-varid'>nullPtr</span>
<a name="line-483"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>peekCString</span>
<a name="line-484"></a> <span class='hs-varid'>n_addrtype</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-485"></a><span class='hs-comment'>{-# LINE 454 "Network/BSD.hsc" #-}</span>
<a name="line-486"></a> <span class='hs-varid'>n_net</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>20</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-487"></a><span class='hs-comment'>{-# LINE 455 "Network/BSD.hsc" #-}</span>
<a name="line-488"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>NetworkEntry</span> <span class='hs-layout'>{</span>
<a name="line-489"></a> <span class='hs-varid'>networkName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n_name</span><span class='hs-layout'>,</span>
<a name="line-490"></a> <span class='hs-varid'>networkAliases</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n_aliases</span><span class='hs-layout'>,</span>
<a name="line-491"></a> <span class='hs-varid'>networkFamily</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpackFamily</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span>
<a name="line-492"></a> <span class='hs-layout'>(</span><span class='hs-varid'>n_addrtype</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-493"></a> <span class='hs-varid'>networkAddress</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n_net</span>
<a name="line-494"></a> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-495"></a>
<a name="line-496"></a> <span class='hs-varid'>poke</span> <span class='hs-sel'>_p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"Storable.poke(BSD.NetEntry) not implemented"</span>
<a name="line-497"></a>
<a name="line-498"></a>
<a name="line-499"></a>
<a name="line-500"></a><a name="getNetworkByName"></a><span class='hs-comment'>{-# LINE 467 "Network/BSD.hsc" #-}</span>
<a name="line-501"></a><span class='hs-definition'>getNetworkByName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NetworkName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>NetworkEntry</span>
<a name="line-502"></a><span class='hs-definition'>getNetworkByName</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-503"></a> <span class='hs-varid'>withCString</span> <span class='hs-varid'>name</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>name_cstr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-504"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getNetworkByName"</span> <span class='hs-str'>"no such network entry"</span>
<a name="line-505"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getnetbyname</span> <span class='hs-varid'>name_cstr</span>
<a name="line-506"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-507"></a>
<a name="line-508"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getnetbyname"</span>
<a name="line-509"></a> <span class='hs-varid'>c_getnetbyname</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>NetworkEntry</span><span class='hs-layout'>)</span>
<a name="line-510"></a>
<a name="line-511"></a><a name="getNetworkByAddr"></a><span class='hs-definition'>getNetworkByAddr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NetworkAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Family</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>NetworkEntry</span>
<a name="line-512"></a><span class='hs-definition'>getNetworkByAddr</span> <span class='hs-varid'>addr</span> <span class='hs-keyword'>family</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-513"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getNetworkByAddr"</span> <span class='hs-str'>"no such network entry"</span>
<a name="line-514"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getnetbyaddr</span> <span class='hs-varid'>addr</span> <span class='hs-layout'>(</span><span class='hs-varid'>packFamily</span> <span class='hs-keyword'>family</span><span class='hs-layout'>)</span>
<a name="line-515"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-516"></a>
<a name="line-517"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getnetbyaddr"</span>
<a name="line-518"></a> <span class='hs-varid'>c_getnetbyaddr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NetworkAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>NetworkEntry</span><span class='hs-layout'>)</span>
<a name="line-519"></a>
<a name="line-520"></a><a name="getNetworkEntry"></a><span class='hs-definition'>getNetworkEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>NetworkEntry</span>
<a name="line-521"></a><span class='hs-definition'>getNetworkEntry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-522"></a> <span class='hs-varid'>throwNoSuchThingIfNull</span> <span class='hs-str'>"getNetworkEntry"</span> <span class='hs-str'>"no more network entries"</span>
<a name="line-523"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getnetent</span>
<a name="line-524"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peek</span>
<a name="line-525"></a>
<a name="line-526"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getnetent"</span> <span class='hs-varid'>c_getnetent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>NetworkEntry</span><span class='hs-layout'>)</span>
<a name="line-527"></a>
<a name="line-528"></a><a name="setNetworkEntry"></a><span class='hs-comment'>-- | Open the network name database. The parameter specifies</span>
<a name="line-529"></a><span class='hs-comment'>-- whether a connection is maintained open between various</span>
<a name="line-530"></a><span class='hs-comment'>-- networkEntry calls</span>
<a name="line-531"></a><span class='hs-definition'>setNetworkEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-532"></a><span class='hs-definition'>setNetworkEntry</span> <span class='hs-varid'>flg</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_setnetent</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromBool</span> <span class='hs-varid'>flg</span><span class='hs-layout'>)</span>
<a name="line-533"></a>
<a name="line-534"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"setnetent"</span> <span class='hs-varid'>c_setnetent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-535"></a>
<a name="line-536"></a><a name="endNetworkEntry"></a><span class='hs-comment'>-- | Close the connection to the network name database.</span>
<a name="line-537"></a><span class='hs-definition'>endNetworkEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-538"></a><span class='hs-definition'>endNetworkEntry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLock</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_endnetent</span>
<a name="line-539"></a>
<a name="line-540"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"endnetent"</span> <span class='hs-varid'>c_endnetent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-541"></a>
<a name="line-542"></a><a name="getNetworkEntries"></a><span class='hs-comment'>-- | Get the list of network entries.</span>
<a name="line-543"></a><span class='hs-definition'>getNetworkEntries</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>NetworkEntry</span><span class='hs-keyglyph'>]</span>
<a name="line-544"></a><span class='hs-definition'>getNetworkEntries</span> <span class='hs-varid'>stayOpen</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-545"></a> <span class='hs-varid'>setNetworkEntry</span> <span class='hs-varid'>stayOpen</span>
<a name="line-546"></a> <span class='hs-varid'>getEntries</span> <span class='hs-layout'>(</span><span class='hs-varid'>getNetworkEntry</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>endNetworkEntry</span><span class='hs-layout'>)</span>
<a name="line-547"></a>
<a name="line-548"></a><span class='hs-comment'>{-# LINE 514 "Network/BSD.hsc" #-}</span>
<a name="line-549"></a>
<a name="line-550"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-551"></a><span class='hs-comment'>-- Interface names</span>
<a name="line-552"></a>
<a name="line-553"></a>
<a name="line-554"></a><span class='hs-comment'>{-# LINE 519 "Network/BSD.hsc" #-}</span>
<a name="line-555"></a>
<a name="line-556"></a><a name="ifNameToIndex"></a><span class='hs-comment'>-- returns the index of the network interface corresponding to the name ifname.</span>
<a name="line-557"></a><span class='hs-definition'>ifNameToIndex</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-558"></a><span class='hs-definition'>ifNameToIndex</span> <span class='hs-varid'>ifname</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-559"></a> <span class='hs-varid'>index</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withCString</span> <span class='hs-varid'>ifname</span> <span class='hs-varid'>c_if_nametoindex</span>
<a name="line-560"></a> <span class='hs-comment'>-- On failure zero is returned. We'll return Nothing.</span>
<a name="line-561"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>index</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>index</span>
<a name="line-562"></a>
<a name="line-563"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>safe</span> <span class='hs-str'>"if_nametoindex"</span>
<a name="line-564"></a> <span class='hs-varid'>c_if_nametoindex</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CUInt</span>
<a name="line-565"></a>
<a name="line-566"></a>
<a name="line-567"></a><span class='hs-comment'>{-# LINE 531 "Network/BSD.hsc" #-}</span>
<a name="line-568"></a>
<a name="line-569"></a>
<a name="line-570"></a><span class='hs-comment'>-- Mutex for name service lockdown</span>
<a name="line-571"></a>
<a name="line-572"></a><a name="lock"></a><span class='hs-comment'>{-# NOINLINE lock #-}</span>
<a name="line-573"></a><span class='hs-definition'>lock</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MVar</span> <span class='hs-conid'>()</span>
<a name="line-574"></a><span class='hs-definition'>lock</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span> <span class='hs-varid'>newMVar</span> <span class='hs-conid'>()</span>
<a name="line-575"></a>
<a name="line-576"></a><a name="withLock"></a><span class='hs-definition'>withLock</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-577"></a><span class='hs-definition'>withLock</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withMVar</span> <span class='hs-varid'>lock</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>act</span><span class='hs-layout'>)</span>
<a name="line-578"></a>
<a name="line-579"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-580"></a><span class='hs-comment'>-- Miscellaneous Functions</span>
<a name="line-581"></a>
<a name="line-582"></a><span class='hs-comment'>-- | Calling getHostName returns the standard host name for the current</span>
<a name="line-583"></a><span class='hs-comment'>-- processor, as set at boot time.</span>
<a name="line-584"></a>
<a name="line-585"></a><a name="getHostName"></a><span class='hs-definition'>getHostName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>HostName</span>
<a name="line-586"></a><span class='hs-definition'>getHostName</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-587"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>size</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>256</span>
<a name="line-588"></a> <span class='hs-varid'>allocaArray0</span> <span class='hs-varid'>size</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>cstr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-589"></a> <span class='hs-varid'>throwSocketErrorIfMinus1_</span> <span class='hs-str'>"getHostName"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_gethostname</span> <span class='hs-varid'>cstr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>size</span><span class='hs-layout'>)</span>
<a name="line-590"></a> <span class='hs-varid'>peekCString</span> <span class='hs-varid'>cstr</span>
<a name="line-591"></a>
<a name="line-592"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gethostname"</span>
<a name="line-593"></a> <span class='hs-varid'>c_gethostname</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-594"></a>
<a name="line-595"></a><span class='hs-comment'>-- Helper function used by the exported functions that provides a</span>
<a name="line-596"></a><span class='hs-comment'>-- Haskellised view of the enumerator functions:</span>
<a name="line-597"></a>
<a name="line-598"></a><a name="getEntries"></a><span class='hs-definition'>getEntries</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-comment'>-- read</span>
<a name="line-599"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <span class='hs-comment'>-- at end</span>
<a name="line-600"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-601"></a><span class='hs-definition'>getEntries</span> <span class='hs-varid'>getOne</span> <span class='hs-varid'>atEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>loop</span>
<a name="line-602"></a> <span class='hs-keyword'>where</span>
<a name="line-603"></a> <span class='hs-varid'>loop</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-604"></a> <span class='hs-varid'>vv</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>E</span><span class='hs-varop'>.</span><span class='hs-varid'>catch</span> <span class='hs-layout'>(</span><span class='hs-varid'>liftM</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>getOne</span><span class='hs-layout'>)</span>
<a name="line-605"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-sel'>_types</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IOException</span> <span class='hs-keyword'>in</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-606"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>vv</span> <span class='hs-keyword'>of</span>
<a name="line-607"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-608"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>loop</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>vs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>atEnd</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>v</span><span class='hs-conop'>:</span><span class='hs-varid'>vs</span><span class='hs-layout'>)</span>
<a name="line-609"></a>
<a name="line-610"></a>
<a name="line-611"></a><a name="throwNoSuchThingIfNull"></a><span class='hs-definition'>throwNoSuchThingIfNull</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-612"></a><span class='hs-definition'>throwNoSuchThingIfNull</span> <span class='hs-varid'>loc</span> <span class='hs-varid'>desc</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-613"></a> <span class='hs-varid'>ptr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>act</span>
<a name="line-614"></a> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptr</span> <span class='hs-varop'>==</span> <span class='hs-varid'>nullPtr</span><span class='hs-layout'>)</span>
<a name="line-615"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>ioeSetErrorString</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkIOError</span> <span class='hs-conid'>NoSuchThing</span> <span class='hs-varid'>loc</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>desc</span><span class='hs-layout'>)</span>
<a name="line-616"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>ptr</span>
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